Create a bootable microSD card using Linux

Use the following instructions when using a computer running Linux.

1. Insert the microSD card to your computer and check the node Linux assigns to it (/dev/[sdcard]) using dmesg.
   

   user@pc$ dmesg
   [1413652.901270] sd 41:0:0:0: [sdc] 7744512 512-byte logical blocks: (3.96 GB/3.69 GiB)
   [1413652.903140] sd 41:0:0:0: [sdc] No Caching mode page present
   [1413652.903144] sd 41:0:0:0: [sdc] Assuming drive cache: write through
   [1413652.905638] sd 41:0:0:0: [sdc] No Caching mode page present
   [1413652.905642] sd 41:0:0:0: [sdc] Assuming drive cache: write through
   [1413652.915154] sdc: sdc1

Note Do not mount any partitions the card might contain (or unmount any partition if automatically mounted) as this procedure writes to the entire block device.

2. Write the image file to the microSD card with the following command.

user@pc$ sudo dd if=[file_path/filename.sdcard] of=/dev/[sdcard] bs=1M && sync

Where:

• [file_path/filename.sdcard] is the path and filename to your SD card image
• /dev/[sdcard] is the device node assigned by Linux to your microSD card
Warning: An incorrect device node might destroy all data on your computer hard drive.

The microSD card is now ready for use.